|Volume Viewer Documentation|
Click and drag in the window to tumble the model. Use the mouse wheel to zoom in and out.
A path to a .zip file containing image volume data. The viewer reads images in the order they are encountered in the zip file. Images can be in TIF, PNG, GIF, JPG or PNM format.
If you decide to upload your own data, be careful not to exceede the memory limits of the application (currently set to a maximum of 1GB). The demo datasets fit within a 256x256x128 volume.
Relative width of displayed volume.
Relative height of displayed volume.
Relative depth of displayed volume.
Draw bounding box around entire volume.
When drawing with diffuse light, show the calculated shadow in the upper right hand corner. This is the model seen from the light's point of view.
By default, the program will calculate only one color value per pixel. By enabling multisampling, it will calculate 8 slightly different values per pixel and blend them together. This can smooth jagged edges and provide better looking images.
Number of slices through the data to draw. Larger values make for more detailed renderings. Smaller values make the program more responsive.
Adjust the opacity for all pixels in the model. For best viewing, this should be set to about the same value as Slices.
This isn't a simple multiplier for all density information - instead, it provide a correction factor so that when you adjust the number of slices the total overall opacity of the model does not seem to change.
Click and drag to change light direction.
Draw histogram data underneath the painting area.
The histogram provides information about how the volume data is laid out. The horizontal axis represents the density of the volume data. The vertical axis represents how likely it is a piece of the model represents an edge (aka: the local change in density in math speak). Pixel brightness indicates what percentage of the source data maps to this particular density/edginess coordinate.
How much of the histogram is obscured by the transfer function overlay. This does not affect the rendering - it just makes painting the transfer function easier.
Changes the dividing point for calculating the sectors. By default, all sectors are of equal size. By changing these values, you change the fraction of the volume a sector contains. For example, by setting Center X to .2, the -X sectors will only see 20% of the model while the +X sectors will see the remaining 80%.
If checked, indicates the coresponding sector is visible.
Provides a fast way to select common combinations of sectors.
|Copyright © 2010, Mark McKay http://www.kitfox.com|